Plant Profile & Key Characteristics
Overview: Crape jasmine (Tabernaemontana divaricata) is an evergreen shrub reaching 1-3 m (3-10 ft), grown as a fragrant ornamental and hedge plant for its glossy foliage and pinwheel-like white flowers. It is a bushy Apocynaceae shrub that exudes a milky latex.
Quick Specifications
| Specification | Attribute |
|---|---|
| Plant Type / Life Cycle | Perennial (shrub) |
| Foliage Type | Evergreen |
| Mature Size | 1-3 m tall (3-10 ft) |
| Growth Rate | Moderate |
| Toxicity | Toxic (milky latex) |
| Hardiness | USDA zone 10+ |
Growth Form & Structure
- Height & Spread: Reaches 1-3 m (3-10 ft) in the ground and grows well in containers.
- Growth Habit & Form: Dense, rounded, twiggy shrub that responds well to shaping into a hedge.
- Lifespan & Maturity: Long-lived evergreen; steady moderate growth.
Anatomy & Physical Features
- Leaves & Foliage: Glossy, deep green oval leaves; cut stems ooze milky latex.
- Flower Characteristics: Fragrant, flat white pinwheel flowers with five petals, most notable in the evening.
Primary Uses & Landscape Value
- Functional & Ornamental Roles: Fragrant ornamental shrub, informal flowering hedge and container plant.
Care Guide: Planting, Soil & Watering
Overview: Crape jasmine is an evergreen flowering shrub for warm climates, growing in full sun to part shade in well-drained soil. It likes moderate, regular moisture but should not be left waterlogged.
Quick Care Requirements
| Requirement | Ideal Condition |
|---|---|
| Planting Season | Warm season – spring, summer or autumn in frost-free zones (10+) |
| Growth Rate | Moderate |
| Soil Type | Rich, well-drained soil |
| Water Need | Low to Moderate – keep lightly moist, let surface dry between waterings |
Planting & Establishment
- Best Planting Season: Plant during the warm months (spring to autumn) in its frost-free range.
- How to Plant:
- Hole Preparation: Dig a hole about twice the width of the root ball and the same depth, loosening the sides.
- Soil Amendments: Mix compost or organic matter into free-draining soil to enrich it.
- Planting Depth: Set the shrub at its original soil level, keeping the root collar at the surface.
- Growth Speed & Expectations: A moderate grower reaching 1-3 m and flowering over a long warm-season period.
Soil, Watering & Drainage Care
- Soil Mix & Drainage Needs: Wants moisture-retentive but well-drained soil; in containers use a good potting mix with drainage. Avoid soggy roots.
- Watering Schedule & Technique:
- Young / Newly Planted: Water regularly to keep the soil evenly moist while it establishes.
- Established: Water moderately, letting the surface dry slightly between waterings.
- Seasonal Adjustments: More in heat, less in cool weather.
Climate, Light & Hardiness
Crape jasmine is a tropical-to-subtropical evergreen shrub that thrives in warm, bright conditions and mild Mediterranean gardens. It is frost tender, so reliable outdoor culture is restricted to essentially frost-free climates.
Quick Climate Specifications
| Climate Zones | Tropical, subtropical, mild Mediterranean |
|---|---|
| USDA Hardiness Zones | 10+ (site data) |
| Optimal Temp Range | Approx. 20–32°C (68–90°F) |
| Cold Damage Begins | Around 5°C (41°F); leaves and soft growth suffer first |
| Approx. Survival Minimum | Brief exposure near 0°C (32°F) for an established plant |
| Frost Tolerance | Very Low |
| Light Conditions | Full sun to half shade |
Sunlight & Light Exposure
Optimal Light Setup
Grows well in full sun to half shade; bright light with some afternoon relief in hot climates gives the best foliage and flowering.
Shade & Heat Management
Part shade eases heat stress in the hottest regions, while deep shade reduces the fragrant white blooms.
Best Exposure / Orientation
A warm, sheltered exposure suits its use as a fragrant hedge or specimen.
Temperature Extremes & Hardiness
USDA Hardiness & Regional Limits
Site data places it in zone 10 and warmer (essentially frost-free). In colder regions it is grown in containers and protected over winter.
Cold Damage & Winter Protection
Cool spells slow growth; sustained temperatures below about 5°C (41°F) damage foliage and tender shoots. Exposure duration and plant age matter - young plants are more cold-sensitive than established ones.
Frost Sensitivity
Frost tender: only brief, light frost near 0°C (32°F) is survivable, usually with some leaf burn.
Extreme Heat Tolerance
Good in tropical heat given adequate soil moisture; light midday shade helps in the driest, hottest areas.
Wind, Humidity & Microclimate
Humidity Preferences
Prefers moderate to high humidity.
Dry-Air Tolerance
Moderate; tolerates drier air when kept adequately watered.
Wind Tolerance
Moderate; a sheltered position protects new growth and keeps the plant compact.
Microclimate Recommendations
A warm, wind-protected spot lengthens the flowering season and buffers cold nights.
Growing in Pots, Balconies & Indoors
Crepe jasmine (Tabernaemontana divaricata) is a tropical evergreen shrub, 1-3 m, with pinwheel white flowers and milky sap. The grower does not list it as a houseplant, but being shade-tolerant and tender it is often kept in a bright indoor spot in cold climates, and it makes a fine pot plant for a shaded-to-sunny patio.
Quick Details
- Container Size: A pot of about 15-30 L (4-8 gal), potting up as it grows (general guide)
- Indoor Suitability: Not listed as a houseplant, but tolerable in a bright room while young
- Best Spot: Full sun to half shade; bright, warm and frost-free
- Soil & Drainage: Rich, free-draining mix
- Watering in Pots: Keep lightly moist; average needs, less in cool spells
Indoors & On the Windowsill
- Houseplant: The grower marks it No, but as a shade-tolerant, tender shrub it is often grown in a bright indoor room in cold climates – give it bright, indirect to direct light and warmth.
- Windowsill growing: A young plant suits a bright window; it will eventually need a larger, bright indoor corner.
- Overwintering: Frost-tender – overwinter the pot indoors in a bright, warm spot in cool regions.
On a Balcony or Patio
- Light & wind: Give it sun to part shade in a warm, sheltered spot; shelter from cold wind. Pots in sun dry fast, so check moisture in summer.
- Practicalities: A stable pot suits the bushy shrub; move it under cover before frost.
Choosing the Pot, Soil & Long-Term Care
- Pot & drainage: Use a pot with strong drainage holes and skip a standing-water saucer to avoid root rot; terracotta breathes and dries out faster, while glazed or plastic pots hold moisture longer.
- Potting mix: Fill with a well-aerated, organic-rich medium – a quality potting mix, or peat/coir blended with perlite or vermiculite for free drainage.
- Feeding: Potted plants use up their soil quickly because watering leaches nutrients away, so feed a little more often than plants in open ground through the growing season.
- Repotting: Top up fresh mix each season and renew the soil or pot up about every couple of years, lightly trimming the root ball and top growth of established plants.
- Safety: The milky sap is toxic if eaten – keep it away from children and pets and avoid contact with the sap.
Growing this plant in a greenhouse
A greenhouse can give tabernaemontana divaricata frost protection, cold protection, humidity control and extra warmth. In the right climate it may also be kept growing through winter, depending on how much warmth and light are provided.
Greenhouse at a glance
| Greenhouse suitability | Conditional - depends on your climate |
|---|---|
| Main benefits | frost protection, cold protection, humidity control, extra warmth |
| Season extension | earlier spring & later autumn |
| Outdoor protection advisable below | about 10°C |
| Maintain greenhouse minimum | around 15°C for active growth |
| Suitable types | heated greenhouse, polycarbonate greenhouse, lean-to |
| Heating | Heating is recommended in cold climates for continuous growth. |
Related greenhouse guides
- Greenhouses: How to Choose the Right Greenhouse
- Best Greenhouse Heaters
- Greenhouse Climate Control: Temperature, Ventilation and Humidity
- Best Lean-To Greenhouses
Fertilizing & Feeding
A moderate feeder: balanced feeding through spring and the bloom season supports flowering, with feeding eased off during cool-season rest. Balanced nutrition beats high-phosphorus bloom boosters.
Quick Fertilizing Specs
| Feeding Level | Moderate feeder |
|---|---|
| Main Nutrient Priority | Balanced feeding with adequate nitrogen and potassium; not high phosphorus |
| Best Feeding Period | Spring through the flowering season |
| Organic Options | Compost and other organic matter |
| Reduce/Stop Feeding | Ease off feeding during cool-season rest |
| Micronutrients | Usually met by a complete fertilizer; correct only diagnosed issues such as iron chlorosis in alkaline soil |
| Soil pH | Slightly acidic to near neutral; tolerates a range |
Feeding by Growth Stage
Spring flush of growth
Fuel the spring flush of stems and foliage that will carry the season’s flowers.
| Nutrient direction | A balanced complete fertilizer with adequate nitrogen to build healthy growth ahead of bloom. |
|---|---|
| Timing | As new growth resumes in spring. |
| Frequency | A feeding as growth begins, repeated lightly as the flush continues. |
| Fertilizer types | A balanced complete fertilizer, Compost or other organic matter worked into the root zone |
| Precautions | Favor steady, balanced feeding over pushing lush growth, which can come at the expense of flowers. |
Flowering period
Support a long, healthy bloom without forcing soft growth.
| Nutrient direction | Continue balanced feeding; adequate nitrogen and potassium support flowering better than a high-phosphorus bloom booster. |
|---|---|
| Timing | Through the main flowering period in the warm season. |
| Frequency | Light, steady feedings across the bloom period. |
| Fertilizer types | A balanced complete fertilizer, A light organic top-dressing |
| Precautions | Skip high-phosphorus bloom products; balanced nutrition and good light drive flowering. |
Cool-season rest
Let the plant rest through cool weather without pushing tender growth.
| Nutrient direction | None – withhold fertilizer while the plant is not in active growth. |
|---|---|
| Timing | During cool-season dormancy or slowed winter growth. |
| Frequency | No feeding at this stage. |
| Fertilizer types | No feeding at this stage; hold off fertilizing until active growth resumes. |
| Precautions | Do not fertilize a resting plant; wait until active growth returns in spring. |
Nutrient Deficiency Signs & Corrections
Older, lower leaves fade to pale green or uniform yellow and overall growth slows.
| Possible causes | low available soil nitrogen, nitrogen leaching from heavy watering or rain, thin, low-organic-matter soil |
|---|---|
| Appears first on | older, lower leaves |
| What to check | recent feeding history, soil organic matter, watering and drainage |
| Possible correction | Apply a nitrogen-containing complete fertilizer and build soil organic matter, then water evenly. |
The youngest leaves turn pale or yellow between green veins while older leaves stay greener.
| Possible causes | high or alkaline soil pH locking up iron, waterlogged or poorly aerated roots, genuinely low available iron |
|---|---|
| Appears first on | new, youngest leaves |
| What to check | soil pH, drainage and root health, whether symptoms favor the newest growth |
| Possible correction | Correct soil pH toward the plant’s preferred range and apply a chelated iron product per its label. |
Leaf margins brown or scorch and growth stalls despite adequate watering.
| Possible causes | fertilizer salt buildup in the root zone, under-watering that concentrates salts, excessive or too-frequent feeding |
|---|---|
| Appears first on | leaf margins and tips |
| What to check | recent fertilizer amounts, watering consistency, drainage, especially in containers |
| Possible correction | Ease off feeding, water thoroughly to flush accumulated salts, then return to lighter feeding. |
Pruning, Training & Seasonal Maintenance
Crape jasmine (Tabernaemontana divaricata) is a fragrant, glossy-leaved evergreen shrub widely grown as an ornamental hedge. It is a naturally bushy, rounded evergreen that takes light pruning well and reblooms readily, because it flowers on the current season’s new growth. Shape it after a bloom flush or in late winter, keep cuts light, and note the milky latex when you work.
Quick Pruning & Maintenance Specs
| Pruning Tolerance | Moderate to High — reshoots and reblooms after trimming |
| Primary Pruning Window | Late winter to early spring, before the main flush |
| Secondary Maintenance Window | Light shaping after a bloom flush; ongoing deadheading |
| Typical Frequency | Light, once or twice a year plus tidying |
| Main Objective | Density, shape and continued bloom |
| Young Plant Priority | Tip-pinch to build a bushy multi-stem framework |
| Mature Plant Priority | Shape, remove leggy or dead wood, light thinning |
| Best Tool Type | Bypass secateurs; precision snips for deadheading |
| Avoid Heavy Pruning During | Peak bloom and before any cold snap (tender) |
Pruning by Plant Age & Size
Newly Established
Remove only damaged shoots and let it settle; a young plant needs foliage to build.
Young / Formative
Pinch the growing tips to encourage a dense, multi-stemmed, rounded framework. This early branching is what gives an even, well-clothed shrub later.
Mature / Established
Shape lightly, remove dead or leggy shoots, and thin only enough to keep the interior healthy. It holds a good natural form, so heavy work is seldom needed.
Seasonal Pruning Schedule
Late winter / early spring (pre-growth): the main light shaping, done before the flush so the new flowering wood is stimulated.
After a bloom flush: light tidy and deadhead to prompt the next round of flowers.
Ongoing sanitary: remove spent blooms and dead twigs; avoid heavy cuts during peak bloom since it flowers much of the year in warmth.
Flowering & Fruiting Wood
Flowers are borne on the current season’s new shoots, so light pruning actually encourages more flowering by promoting branching. A hard cutback delays bloom only until the new wood matures. The waxy white five-petalled (and double-flowered) blooms form on new wood, so trimming refreshes the display.
Structural Pruning & Training
Remove crossing, inward and leggy shoots and lightly thin. It hedges neatly if wanted, but selective pruning shows the pinwheel flowers to best effect. For the best flower display, favour selective cuts over shearing.
Special Growth to Remove
- Spent flowers and dead twigs. The plant bleeds milky latex from cuts — not harmful to the plant, but wear gloves. There are no suckers to manage.
Container & Small-Space Pruning
An excellent patio and container shrub: pinch regularly to keep it compact and floriferous. Container plants respond to the same light tip pruning rather than hard cuts.
Tools
Bypass secateurs for shaping and precision snips for deadheading. Hedge shears only if it is deliberately grown as a low formal hedge; otherwise selective cuts preserve the flowers.
Tool Hygiene & Disease Risk
Routine: a clean, sharp blade is enough — this shrub carries low pruning-disease risk. Wipe latex off the blades after working.
Cut Placement & Technique
Cut just above an outward-facing node; combine light heading (for density) with occasional thinning. Deadhead back to the next bud or leaf pair.
Heavy Pruning & Rejuvenation
Moderate rejuvenation is tolerated — a leggy old plant can be cut back harder and will reshoot, with a temporary loss of flowers until new wood forms. Do this in late winter, not going into cold.
Post-Pruning Care
Water normally; a light feed is worthwhile only after a genuine rejuvenation cut, not after routine tidying.
Common Pruning Mistakes
- Shearing a plant grown for its individual flowers, which removes the very shoots about to bloom.
- Hard-pruning in the middle of the flowering period.
- Cutting just before a cold snap on a tender, zone-10 shrub.
When NOT to Prune
Do not prune heading into cold weather, and avoid heavy cuts during peak bloom if you want to keep the flowers.
Recommended Tools (by task)
- bypass_secateurs — light shaping and thinning of woody shoots.
- precision_snips — deadheading and tip-pinching for density and rebloom.
Pruning Troubleshooting
| Problem | Possible Cause | What to Check | Corrective Action |
| Leggy, sparse shrub | No early tip-pinching | Branching density and shoot length | Pinch tips through the growing season to rebuild density |
| Few flowers after trimming | Sheared off developing new-wood shoots | When and how it was cut | Switch to light selective cuts before the flush; avoid shearing |
| Dieback of shoots | Cold damage on a tender shrub | Recent low temperatures | Delay pruning until frost risk passes; cut back to live wood |
Propagation Guide
Semi-hardwood stem cuttings are the preferred method for crape jasmine and root easily. Because many garden plants are double-flowered selections, cuttings (or layering) are needed to keep the flower form — seed is variable and the double forms set little viable seed — and propagation is easy.
Quick Propagation Specs
| Best Propagation Method | Semi-hardwood stem cuttings |
| Alternative Methods | Air layering; seed (single-flowered forms) |
| Propagation Difficulty | Easy |
| Seed True-to-Type | Variable; cultivar-dependent (double forms not true) |
| Vegetative True-to-Type | Yes |
| Best Propagation Season | Warm months (spring–autumn) |
| Cutting Rooting Time | Typically several weeks in warm, humid conditions |
Stem Cuttings
Cutting Type
Semi-hardwood shoots with one or more nodes.
Best Timing
Warm growing season.
Cutting Preparation
Strip lower leaves; allow the milky latex to dry at the cut before inserting.
Rooting Setup
Well-drained medium, warm and humid.
Rooting Hormone
Optional, beneficial.
Rooting Time
Usually several weeks under warmth.
Air & Ground Layering
A reliable way to reproduce a chosen double-flowered plant: girdle a branch, enclose in moist medium, and detach when rooted after several weeks.
Growing from Seed
Only single-flowered plants tend to set viable seed; sow fresh and warm. Germination is slow, and seedlings vary, so seed is not used to keep a double-flowered form.
Bloom & Flower Guide
Quick Details
- Bloom Season: Spring, summer and autumn
- Time to First Bloom: Once the shrub is established (evergreen perennial)
- Flower Appearance: Fragrant, flat white five-petalled flowers (pinwheel-shaped)
- Edibility: Not eaten – grown as an ornamental (milky sap)
Detailed Blooming Overview
Crape jasmine is grown for its clean, flat white pinwheel flowers, which are fragrant – especially at night – and appear across spring, summer and autumn.
Flower Characteristics
- Flat, five-petalled white flowers with a pinwheel look; sweetly scented.
Bloom Care & Pollination
- Pollination: The evening fragrance draws night-flying pollinators such as moths.
Pests, Diseases & Troubleshooting
Overview: Crape jasmine (Tabernaemontana divaricata, ‘pinwheel flower’) is a tropical Apocynaceae shrub with milky sap. It is fairly trouble-free; its usual issues are the family’s sap-suckers – mealybugs, soft scale, aphids and whitefly – whose honeydew brings disfiguring sooty mould, plus iron chlorosis on alkaline soils. Keep it vigorous and watch the leaf axils.
Quick Troubleshooting Overview
| Issue / Pest | Main Symptom | Primary Solution |
|---|---|---|
| Mealybugs | White cottony tufts in axils and shoot tips | Alcohol swab, oil/soap, beneficials |
| Scale | Brown/white bumps on stems and leaves, honeydew | Prune out, horticultural oil |
| Aphids | Colonies on new shoots, sticky honeydew | Water jet, beneficials, insecticidal soap |
| Whiteflies | Tiny white flies, honeydew, sooty mould | Yellow sticky traps, soap/oil |
| Sooty mould | Black film on leaves over honeydew | Control the sap-suckers, wash off |
| Iron chlorosis | Yellow leaves with green veins | Acidify soil, iron chelate |
Common Pests & Management
- Mealybugs (Planococcus, Pseudococcus spp.):
- Symptoms: White cottony tufts in leaf axils, shoot tips and among roots of potted plants; honeydew, sooty mould and stunted, distorted growth.
- Prevention & Control: Dab with an alcohol-tipped swab, drench roots if infested, and isolate affected plants. Horticultural oil or insecticidal soap repeated at intervals; quarantine new arrivals.
- Scale Insects (Aspidiotus nerii, Saissetia spp.):
- Symptoms: Brown, grey or white limpet-like bumps encrusting stems and leaf undersides; yellow spotting, honeydew (soft scales) and sooty mould, and slow decline.
- Prevention & Control: Prune out heavily encrusted wood, encourage parasitic wasps and lady beetles, and wash off honeydew. Horticultural oil smothers crawlers – repeat to catch successive hatches; treat in cool conditions.
- Oleander / Milkweed Aphid (Aphis nerii):
- Symptoms: Dense colonies of bright yellow-orange aphids with black legs on new shoots, buds and flower stalks; sticky honeydew and black sooty mould. Almost universal on Apocynaceae.
- Prevention & Control: Blast off with water and encourage ladybirds, lacewings and parasitic wasps (mummified brown aphids show they are working). Insecticidal soap or horticultural oil for heavy colonies; avoid excess nitrogen that fuels soft growth.
- Spider Mites (Tetranychus urticae):
- Symptoms: Fine pale stippling turning leaves dull bronze, with delicate webbing beneath in hot, dry air; heavy attack scorches and drops leaves.
- Prevention & Control: Raise humidity and hose down foliage, conserve predatory mites, and treat hot-spots with insecticidal soap or horticultural oil on the undersides.
- Whiteflies (Bemisia, Trialeurodes spp.):
- Symptoms: Tiny white flies rising in clouds when disturbed; nymphs on leaf undersides excrete honeydew that blackens with sooty mould.
- Prevention & Control: Yellow sticky traps to monitor and trap, encourage Encarsia and lacewings, and spray insecticidal soap or horticultural oil under the leaves.
Diseases & Fungal Issues
- Sooty Mould (Capnodium and allied fungi):
- Symptoms: A black, soot-like film coating leaves and stems, growing on the honeydew excreted by aphids, scale, mealybugs and whitefly; blocks light and disfigures.
- Treatment & Management: It is a symptom, not the cause – control the sap-sucking insects producing the honeydew and the mould weathers away. Wash off heavy deposits with soapy water.
- Fungal Leaf Spot (Cercospora, Alternaria, Phyllosticta spp.):
- Symptoms: Brown or grey rounded spots, sometimes with yellow halos, on leaves in warm, humid, wet-leaf conditions; heavy spotting causes leaf drop.
- Treatment & Management: Improve airflow, avoid overhead watering, and remove spotted and fallen leaves. A copper fungicide protects new growth under persistent wet pressure.
- Root Rot (Phytophthora, Pythium):
- Symptoms: Yellowing, wilting and dieback with dark, rotted roots in heavy, waterlogged soil or overwatered pots.
- Treatment & Management: Plant in free-draining soil, water when the surface dries, and avoid waterlogging; improve drainage and remove severely affected plants.
Growing Difficulties & Abiotic Problems
- Iron Chlorosis:
- Cause & Symptoms: On alkaline or waterlogged soils the youngest leaves turn yellow between green veins as iron uptake fails.
- Correction Strategy: Lower soil pH with organic matter/elemental sulfur, improve drainage, and apply chelated iron for a quick correction.
- Cold Sensitivity:
- Cause & Symptoms: Below about 10C growth stalls and leaves yellow and drop; frost damages or kills soft growth.
- Correction Strategy: Grow in a warm, sheltered spot or as a container plant moved under cover in cold spells; tidy cold-damaged shoots afterwards.
- Bud / Flower Drop:
- Cause & Symptoms: Sudden shifts in light, temperature or watering, or drying out, cause buds to abort.
- Correction Strategy: Keep conditions and moisture steady, especially during budding, and avoid moving flowering plants abruptly.
What Helps – Products & Tools
A gentle shrub kit: horticultural oil and insecticidal soap for mealybugs, scale, aphids, mites and whitefly, alcohol swabs for spot-treating mealybugs, yellow sticky traps for whitefly, chelated iron for chlorosis, and a copper fungicide only if leaf spot is bad. Controlling the sap-suckers clears the sooty mould automatically.
